Warm-Ups


1	To solve x⁴ - 5x² + 6 = 0 by substitution, we can let w = x².
		A)	TRUE
		B)	FALSE


2	We can solve x⁵ - 3x³ - 10 = 0 by substitution if we let w = x³.
		A)	TRUE
		B)	FALSE


3	We always use the quadratic formula on equations of quadratic form.
		A)	TRUE
		B)	FALSE


4	If w = x^1/6, then w² = x^1/3.
		A)	TRUE
		B)	FALSE


5	To solve x - 7(x)^1/2 + 10 = 0 by substitution, we let w^1/2 = x.
		A)	TRUE
		B)	FALSE


6	If y = 2^1/2, then y² = 2^1/4.
		A)	TRUE
		B)	FALSE


7	If John paints a 100-foot fence in x hours, then his rate is 100/x of the fence per hour.
		A)	TRUE
		B)	FALSE


8	If Elvia drives 300 miles in x hours, then her rate is 300/x miles per hour (mph).
		A)	TRUE
		B)	FALSE


9	If Ann’s boat goes 10 mph in still water, then against a 5-mph current, it will go 2 mph.
		A)	TRUE
		B)	FALSE


10	If squares with sides of length x inches are cut from the corners of an 11-inch by 14-inch rectangular piece of sheet metal and the sides are folded up to form a box, then the dimensions of the bottom will be 11 - x by 14 - x.
		A)	TRUE
		B)	FALSE

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